Single-layer fluorescent conjugated polymer membrane and preparation method thereof
A technology of conjugated polymers and polymers, which is applied in the field of single-layer fluorescent conjugated polymer membranes and its preparation, can solve the problems of reducing the density of matrix surface modification and affecting the fluorescence intensity of SAM membrane materials, and achieve analytical sensitivity and selectivity Improve and eliminate terrorist threats and ensure the effect of modification density
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[0038] A method for preparing a single-layer fluorescent conjugated polymer film with a sensing function for aromatic hydrocarbon explosives, the steps are as follows:
[0039] Step 1: Preparation of matrix material: The purpose of this step is to modify the azide functional group on the surface of the matrix material, and at the same time modify amino groups, reactive groups and neutral groups.
[0040] Cut the silicon wafer into 2.5×1.3cm size, ultrasonically wash it with acetone, methanol and water for 15 minutes, then wash it with 5% HF acid solution for 5 minutes, wash it several times with ultrapure water, and then wash it with piranha solution (7 / 3,v / v,30%H 2 o 2 / 98%H 2 SO 4 , Note: Piranha solution will react violently with organic matter and must be used with care) for 30 minutes. After washing with a large amount of water, dry at 100°C for 1 h. Place the activated silicon chip in a 25mL round bottom flask, add 10mL toluene and 100mM 3-chloropropylsilane. Unde...
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